Improvement in paper cop-tubes



JLMcCAUSLANiD.

PAPER-GOP TUBE.

Patented Dec.28,1875.

Wa'mses,

N.PETER5 FKOTO-LITHOGRAPHER. WASHINGTON. Dv C.

UNITED STATES FFICE.

PATENT IMPROVEMENT m PAPER CQP-TUBES.

Specification forming part of Lotte 1's Patent N 0. 17 L577 dated'ljecember 28,1875; application filed October 22,1815.

To all whom may, concm'nf Be it known that I, JOHN MGOAUSLAND, of

the city and county of Providence, in the State of BhodeiI'sland, have invented certain new and useful Improvements in Paper Cop-Tubes;

and I do hereby declare that the followingspecification, taken in connection with the drawings furnished and forming a part of the I becoming burred or ragged.

In cotton-spinning no practical difficulty is experienced in laying the yarn so firmly in the cop that it will remain intact after its removal from the spindle, and throughout the subsequent handlings incident to its use. In wool-spinning, however, the yarn is neither so solidly twisted as cotton, n'or so solidly copped, and hence the cop is more liable to injury by the falling or slipping of the yarn at the base of the cop.

My invention partially consists in a paper cop-tube tapered to correspond with its spindle, and provided with a solid flanged base. Another feature of my invention consists in a tapered paper cop-tube with an interior contracted tip, whereby a firm frictional contact is attained with the spindle at the tip of the tube, and said tip prevented from readily becoming ragged or burred.

To more particularly describe my invention, I will refer to the accompanying drawings, in

" which Figure 1 represents, in side view and in sectioi1,a tapered tube with an interior contracted tip. Fig. 2 represents, in like manner, a tapered tube with acontracted tip and one form of solid flanged base. Fig. ,3 represents, -in like'manner, a similar tube with another form of solid base.

It is well known that paper cop-tubes are less expensive than any other kind of coptubes, and that they have, therefore, practic-ally superseded all others. It is also well known that they are made by wrapping a sheet of paper charged with adhesive matter in successive layers upon a spindle.

Heretofore in the manufacture of long-tapered tubes their tips have been made by conforming them to the tapered sides of the spindle on which they were made. This resulted in a tube having throughout its length a uniform frictional contact with the spindle. In each of the sectional figures in the drawings, the tubes A have tips, as at a, which are internally contracted. Instead of conforming the tips to the tapered sides of a spindle, I contract them by forming them partially oyer the rounded end of a spindle or a rounded shoulder on a spindle. By means of this contracted tip the tube always maintains a firm frictional contact at that point with the spindle, and in use the tip is much less liable to burr or becomeragged than the tips of tubes not thus contracted. This close fitting of the tube at its tip to the spindle, and the nonliability of the contracted end to burr and become ragged, result in little or no appreciable wear of the yarn in its contact with the exterior of the tube at its tip during the spinning of the yarn. The solid base shown at b, Fig. 2, may be variously constructed.

I prefer to form it of a narrow long stripof heavy paper, well charged with suitable adhesive matter, and wound in successive layers until a base of the required diameter is obtained. The form of solid base shown at c, Fig. 3, may be constructed in a similar manner; but in order to produce the exterior inclined sides thereof I use, instead of a parallel-sided narrow strip, as in Fig. 2, a strip as much wider at one end than at the other as will produce a base of the required sectional outline when wrapped upon the tube,

commencing with the widest end of the strip. i

These bases may, however, be made of material other than paperas, for instance, of wood-and these may be secured to the tubes by adhesive matter or otherwise. It will be seen that my cop-tubes, thus provided with a solid base, will perform the general functions of such wooden or metal bobbins as have heretofore been used in spinning. As compared with them, however, they are far superior, in that they are cheaper than either of bobbins composed of wood or of metal.

,1 those kind of bobbins, lighter, and will take on 111011} yaih".

The item of economy in first cost is very considerable, and this item is in no manner appreciably offset by their seeming lack .of durability when compared with tubes and The feature of lightness is one of great practical value, involving a saving of power, lubricants, and wear of the spinning machinery.

The feature of capacity for taking on more yarn than the wooden or metal tubes and bobbinsis obviously of great practical value, as it involves less frequent doffin g and the consequent greater capacity ofthe spinning machinery.

.In Fig.2 I showat the base, in dotted lines,

' I a groovewith a square'shoulder, which is of value, when the tubes are to be used in shuttles, asa means whereby the retaining-spring of the shuttle may securely engage with the tube. In the same figure, also in dotted lines, I show a spiral strip of cloth or paper, which i is secured to the outside of the tube, for preventing the cop from moving bodily longitudinally on the tube. Such a strip will be useful on tubes which are to beused in shut- -tles.

I am well aware that it has heretofore been proposed, in connection with enameled-paper cop-tubes, to provide them with bases and with tips enlarged by stretching and out wardly flaring the paper. Flanges at the bases of tubes of this character serveto retain the yarn on the tube; but they cannot perform the service of my solid bases, because the stretched flanges are readily compressible, and do not afford a surface with which the spring of the shuttle may engage; nor can paper cop-tubes 'be flared sufficiently by stretching to enable the flanges thus formed to be of value with long cotton or woolen cops. Moreover, the cop-tube at its base andits tip should always engage with the spindle under frictional contact, and when flared by stretching, as heretofore, they have no such contact with the spindle at the flared portions.

Having thusdescribed my invention, I claim as new. and desire to secure by Letters Patent i 1. A tapered paper cop-tube, provided witl a solid flanged base built up from or attached to the tube, substantially as described.

2. A. tapered paper cop-tube, having an internally-contracted tip, substantially as described. V

JOHN MCOAUSLAND.

Witnesses:

CHARLES SELDEN, GEORGE NORTHUP. 

